%0 Journal Article
%A Min Ling
%A Wenjun Yan
%A ayako Kawase
%A Hui Zhao
%A Yanbao Fu
%A Vincent S Battaglia
%A Gao Liu
%B ACS Applied Materials & Interfaces
%D 2017
%G eng
%N 37
%P 31741 - 31745
%R 10.1021/acsami.7b06485
%T Electrostatic Polysulfides Confinement to Inhibit Redox Shuttle Process in the Lithium Sulfur Batteries
%V 9
%8 09/2017
%! ACS Appl. Mater. Interfaces
%X <p>Cationic polymer can capture polysulfide ions and inhibit polysulfide shuttle effect in lithium sulfur (Li-S) rechargeable batteries, enhancing the Li-S battery cycling performance. The cationic poly[bis(2-chloroethyl) ether-alt-1,3-bis[3-(dimethylamino) propyl]urea] quaternized (PQ) with a high density quaternary ammonium cations can trap the lithium polysulfide through the electrostatic attraction between positively charged quaternary ammonium (R<sub>4</sub>N<sup>+</sup>) and negatively charged polysulfide (S<sub>x</sub><sup>2-</sup>). PQ binder based sulfur electrodes deliver much higher capacity and provide better stability than traditional polyvinylidene fluoride (PVDF) binder based electrodes in Li-S cells. A high sulfur loading of 7.5 mg/<span>cm</span><sup>2</sup> is achieved, which delivers a high initial areal capacity of 9.0 mAh/<span>cm</span><sup>2</sup> and stable cycling capacity at around 7.0 mAh/cm<sup>2</sup> in the following cycles.</p>